$459 Cheap United flights Boston (BOS) to Porto (OPO)

$459 Cheap United flights Boston (BOS) to Porto (OPO)

Prices were available within the past 7 days and start at $459 for one-way flights and $389 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Mar 2 - Fri, May 8

BOS

Boston

OPO

Porto

$389 Roundtrip, found 1 day ago

$389

Roundtrip

found 1 day ago

Select United flight, departing Mon, Mar 2 from Boston to Porto, returning Fri, May 8, priced at $389 found 1 day ago

Mon, Mar 2 - Wed, May 13

BOS

Boston

OPO

Porto

$394 Roundtrip, found 1 day ago

$394

Roundtrip

found 1 day ago

Select United flight, departing Mon, Mar 2 from Boston to Porto, returning Wed, May 13, priced at $394 found 1 day ago

Mon, Mar 2 - Tue, May 12

BOS

Boston

OPO

Porto

$402 Roundtrip, found 1 day ago

$402

Roundtrip

found 1 day ago

Select United flight, departing Mon, Mar 2 from Boston to Porto, returning Tue, May 12, priced at $402 found 1 day ago

Wed, Mar 4 - Fri, May 8

BOS

Boston

OPO

Porto

$408 Roundtrip, found 1 day ago

$408

Roundtrip

found 1 day ago

Select United flight, departing Wed, Mar 4 from Boston to Porto, returning Fri, May 8, priced at $408 found 1 day ago

Wed, Mar 4 - Wed, May 13

BOS

Boston

OPO

Porto

$413 Roundtrip, found 1 day ago

$413

Roundtrip

found 1 day ago

Select United flight, departing Wed, Mar 4 from Boston to Porto, returning Wed, May 13, priced at $413 found 1 day ago

Wed, Mar 4 - Tue, May 12

BOS

Boston

OPO

Porto

$421 Roundtrip, found 1 day ago

$421

Roundtrip

found 1 day ago

Select United flight, departing Wed, Mar 4 from Boston to Porto, returning Tue, May 12, priced at $421 found 1 day ago

Sat, Feb 28 - Fri, May 8

BOS

Boston

OPO

Porto

$439 Roundtrip, found 1 day ago

$439

Roundtrip

found 1 day ago

Select United flight, departing Sat, Feb 28 from Boston to Porto, returning Fri, May 8, priced at $439 found 1 day ago

Sat, Feb 28 - Wed, May 13

BOS

Boston

OPO

Porto

$444 Roundtrip, found 1 day ago

$444

Roundtrip

found 1 day ago

Select United flight, departing Sat, Feb 28 from Boston to Porto, returning Wed, May 13, priced at $444 found 1 day ago

Sat, Feb 28 - Tue, May 12

BOS

Boston

OPO

Porto

$452 Roundtrip, found 1 day ago

$452

Roundtrip

found 1 day ago

Select United flight, departing Sat, Feb 28 from Boston to Porto, returning Tue, May 12, priced at $452 found 1 day ago

Mon, Mar 2 - Mon, May 11

BOS

Boston

OPO

Porto

$455 Roundtrip, found 1 day ago

$455

Roundtrip

found 1 day ago

Select United flight, departing Mon, Mar 2 from Boston to Porto, returning Mon, May 11, priced at $455 found 1 day ago

Mon, Mar 2 - Mon, May 11

BOS

Boston

OPO

Porto

$459 Roundtrip, found 1 day ago

$459

Roundtrip

found 1 day ago

Select United flight, departing Mon, Mar 2 from Boston to Porto, returning Mon, May 11, priced at $459 found 1 day ago